161298086 has 4 divisors (see below), whose sum is σ = 241947132. Its totient is φ = 80649042.

The previous prime is 161298079. The next prime is 161298089. The reversal of 161298086 is 680892161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 680892161 = 23 ⋅29604007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161298089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40324520 + ... + 40324523.

It is an arithmetic number, because the mean of its divisors is an integer number (60486783).

Almost surely, 2^161298086 is an apocalyptic number.

161298086 is a deficient number, since it is larger than the sum of its proper divisors (80649046).

161298086 is an equidigital number, since it uses as much as digits as its factorization.

161298086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80649045.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 161298086 is about 12700.3183424669. The cubic root of 161298086 is about 544.3477155412.

The spelling of 161298086 in words is "one hundred sixty-one million, two hundred ninety-eight thousand, eighty-six".